AT24C02连续读取不了

2万 · 2022-3-18 16:00

unsigned char AT24C02ReivcePAGE(unsigned char *Rdata,unsigned char PAGEADDRESS,unsigned char RomAddress,unsigned char number)

// unsigned char Rbeyts;

PAGEADDRESS |= PAGEADDRESS;

if(WaitAck())

I2cSendByte(RomAddress);

return 1;

PAGEADDRESS |= RDeivceAddress;

if(WaitAck())

for(;number!=1;number--){

SDA=0;

SCL=1;

SCL=0;

Rdata++;

*Rdata=I2cReadByte();

Delay20us();

return 0;

}

u8 code smgduan[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
u8 code digital[10]={0x02,0x06,0x08,0x10,0x11,0x14,0x13,0x22,0x55,0xff};
u8 code rdigital[10];
void Keypros()
{
      if(k1==0)
      {
            delay(1000);  //消抖处理
            if(k1==0)
            {
                     At24c02WritePAGE(digital,0,0x00,10); //在地址内写入数据num
            }
            while(!k1);
      }
      if(k2==0)
      {
            delay(1000);  //消抖处理
            if(k2==0)
            {
                     At24c02ReivcePAGE(rdigital,0,0x00,1);
                     num=rdigital[0];//读取EEPROM地址内的数据保存在num中
            }
            while(!k2);
      }
      if(k3==0)
      {
            delay(100);  //消抖处理
            if(k3==0)
            {
                     num++;          //数据加1
                     if(num>255)num=0;
            }
            while(!k3);
      }
      if(k4==0)
      {
            delay(1000);  //消抖处理
            if(k4==0)
            {
                     num=0;                //数据清零
            }
            while(!k4);
      }

}void main()
{

      num=0;
      while(1)
      {
            Keypros();       //按键处理函数
            datapros();       //数据处理函数
            Digdisplay();//数码管显示函数
      }
}

只看该作者 · 2022-3-18 18:11

可以参考BSP-I2C-EEPROM的demo